How to set up Wi Fi with BSNL Data One

hi i have taken bsnl dataone connection recently.i am able use to net by connecting my laptop with wire but i want to know how set up wi fi network, i am using DNA-A211-I ADSL 2+ Modem/Router (4Ethernet + 1Wi-Fi) ITI modem and bsnl person has provided me my login id and password only so please any one help me